- The colour section now edits the deck tokens (card back, card stock and
  inks, foil and signals, text) with tokens.css values as defaults; the top
  and tab bar section only lists values theme.js still applies.
- Retired sections (home tiles, quick actions, game menu sheet, menu buttons,
  chips, bot cards, game gradients, pill radii) are gone; saving them did
  nothing after the redesign, and their old defaults could have overridden it.
- Emoji replacement slots become icon overrides (icon_<name>); slots that are
  now drawn icons are dropped from the asset list. Board defaults match the
  printed boards.
- POST /api/branding.php required no login at all: anyone could rewrite the
  theme for every player. It now requires the branding admin session.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>